Study on disaster mechanism and disaster mode of asymmetric floor heave in inclined floor
Asymmetrical floor heave disaster is easy to occur in deep inclined floor with high in-situ stress.The combined finite-discrete element numerical method(FDEM)was used to study the mechanism and mode of asymmetric floor heave disaster in inclined floor strata,and the influence of dip angle was also investigated.The results showed that:① The stress-driven floor heave mechanism could be interpreted as the progressive fracture-swelling-squeezing deformation;annular tangential concentrated stress was the driving source;②When the dip angle wa 15°～30°,the asymmetric floor heave was obvious;when the dip angle was 45°～75°,the asymmetry feature ws weakened;however,when the inclination angle was 0° or 90°,the floor heave was symmetrical.
万方数据
维普
